Re: [STDS-802-16] [Relay TG][MPDU Construction Adhoc] 2nd teleconf minutes
Title: Message
Jeff,
The following is my comment on your discussion
minutes.
Implicit transport CID with QoS semantic is considered
harmful.
In .16j 06/026r3, it defined two transport CID mgmt
approaches for data forwarding: Systematic CID (S-CID)
and Explicit CID (E-CID), where S-CID is a special type of
source routing approach with embedded topology.
Let us assume a RS is implemented as "dual-mode" RS which
supports both approaches. When this RS is roaming
between S-CID domain and E-CID domain, it should operate
under each mode properly.
If one implements transport CID with implicit QoS semantic,
during the handover, the integrity of CID semantic
have to be checked and matched between two modes. It will
introduce more operation complexity/cost to implement this
semantic transformation in the system. As well, the
over-split CID space (note that S-CID has split CID space
already)
will put the limitation for handover procedure. For
example, what if a target BS/RS has run out its transport CID
space
for a particular QoS type?
With this regard, the explicit QoS processing
via either in-band signaling (i.e., MAC header), or out-band signaling
(i.e.,
DSx messaging) is a much better and simpler solution. It
has no limitation for large-scale MMR network, and it is
also the typical approach we see in other networking
technologies.
G.Q Wang
Nortel
Dear all:
Please find the attached minutes for the 2nd
teleconf of Relay TG MPDU construction adhoc.
Best
regards,
Jeff
_________________________________________
Jeffrey
Z. TAO, Ph.D.
Member of Technical Staff
Mitsubishi Electric Research
Laboratories (MERL)
201 Broadway, 8th floor
Cambridge, MA
02139
P 617.621.7557
F 617.621.7550
E tao@merl.com
_________________________________________